Patents by Inventor Mark E. Ristvedt
Mark E. Ristvedt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7553223Abstract: A coin sorter has a separator strip disposed outside of an exit area of a stationary plate in which a line of coins of mixed denominations are indexed against a spirally extending ridge in a single layer and single file. The strip has a series of incremental segments defined in a side facing the center of a resilient disc which enables the coins to be captured. An edge area of the strip is configured to immediately re-capture coins as they are released at the exit area and to hold the coins until they pass by a segment of the strip that is far enough away from the indexing line of the coins that they are no longer captured, but are freely released. The released coins then proceed outward along a specific path defined for a particular coin denomination.Type: GrantFiled: June 1, 2004Date of Patent: June 30, 2009Assignee: Ristvedt, LLCInventors: Victor G. Ristvedt, Mark E. Ristvedt
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Patent number: 6758736Abstract: A coin or token sorting apparatus is disclosed. In this apparatus, a hopper within which coins are placed is provided with a floor, the floor also serving as a dispenser for spreading the coins out in generally across the floor. From one side of the floor the coins are provided to a plurality of V-shaped troughs being bisected longitudinally so as to create a coin path down each inner side of each trough. Coins are oriented in a single file as they move down each side of a respective trough. After being so oriented, the coins enter a region of a respective trough having a slot in a bottom thereof, with the coins riding along a narrow ridge of the slot. For each diameter of coin or token, a diverter is provided along the slot so that a coin to be sorted engages the diverter and is lifted off the ridge and directed through the slot. As such, larger coins are sorted first, with smaller coins moving unaffected past a diverter for a larger coin.Type: GrantFiled: June 12, 2002Date of Patent: July 6, 2004Inventors: Victor G. Ristvedt, Mark E. Ristvedt
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Patent number: 6017270Abstract: A coin sorter wherein there area plurality of side-by-side V-shaped, elongated tracks. These tracks are on a slope and are fed from a common coin feeder and the tracks are terminated at lower ends by coin diverters varied in configuration to progressively divert, and thus sort coins in a descending order of diameter.Type: GrantFiled: August 28, 1998Date of Patent: January 25, 2000Inventors: Victor G. Ristvedt, Mark E. Ristvedt
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Patent number: 5538468Abstract: A coin sorting apparatus receives coins through an opening in a guide plate onto the resilient surface of a rotating disc. The surface of the guide plate is contoured and includes portions positioned sufficiently close to the surface of the disc to press coins traveling therebetween into the resilient surface of the disc. As the coins are circulated circumferentially between the discs, the countours in the guide plate guide the coin into a single file along a first prescribed path. Coins of at least one selected denomination are displaced to follow a second prescribed path. The coins are discharged along each described path at exit locations at the periphery of the plate.Type: GrantFiled: February 9, 1994Date of Patent: July 23, 1996Assignee: Cummins-Allison Corp.Inventors: Victor G. Ristvedt, Mark E. Ristvedt
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Patent number: 5297986Abstract: A coin sorting apparatus receives coins through an opening in a guide plate onto the resilient surface of a rotating disc. The surface of the guide plate is contoured and includes portions positioned sufficiently close to the surface of the disc to press coins traveling therebetween into the resilient surface of the disc. As the coins are circulated circumferentially between the discs, the countours in the guide plate guide the coin into a single file along a first prescribed path. Coins of at least one selected denomination are displaced to follow a second prescribed path. The coins are discharged along each described path at exit locations at the periphery of the plate.Type: GrantFiled: November 10, 1992Date of Patent: March 29, 1994Assignee: Cummins-Allison Corp.Inventors: Victor G. Ristvedt, Mark E. Ristvedt
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Patent number: 5176565Abstract: A coin sorting apparatus receives coins through an opening in a guide plate onto the resilient surface of a rotating disc. The surface of the guide plate is contoured and includes portions positioned sufficiently close to the surface of the disc to press coins traveling therebetween into the resilient surface of the disc. As the coins are circulated circumferentially between the discs, the contours in the guide plate guide the coins into a single file along a first prescribed path. Coins of at least one selected denomination are displaced to follow a second prescribed path. The coins are discharged along each prescribed path at exit locations at the periphery of the plate.Type: GrantFiled: April 26, 1990Date of Patent: January 5, 1993Assignee: Cummins-Allison CorporationInventors: Victor G. Ristvedt, Mark E. Ristvedt
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Patent number: 5104353Abstract: A coin sorting apparatus receives coins through an opening in a guide plate onto the resilient surface of a rotating disc. The surface of the guide plate is contoured and includes portions positioned sufficiently close to the surface of the disc to press coins traveling therebetween into the resilient surface of the disc. As the coins are circulated circumferentially between the discs, the contours in the guide plate guide the coins into a single file along a first prescribed path. Coins of at least one selected denomination are displaced to follow a second prescribed path. The coins are discharged along each prescribed path at exit locations at the periphery of the plate.Type: GrantFiled: December 18, 1989Date of Patent: April 14, 1992Assignee: Ristvdet-Johnson, Inc.Inventors: Victor G. Ristvedt, Mark E. Ristvedt
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Patent number: 5080633Abstract: A coin sorting apparatus counts and sorts coins by denomination in an efficient manner. The steps involve receiving the coins on a disc having a resilient surface and imparting rotational movement to the coins by rotating the disc with a stationary guide plate having a contoured surface spaced slightly over the resilient surface of the disc. The guide plate includes a recess for guiding the coins on the disc into a single file of coins. A referencing portion of the contoured surface is used to guide one edge of the coins in the single file along a prescribed path. The coins of a selected denomination are then counted as they are moved along the prescribed path. Coins of different denominations are discharged at different locations around the periphery of the stationary guide plate, and, in response to the counting, the discharge of the coins is interrupted.Type: GrantFiled: April 26, 1990Date of Patent: January 14, 1992Inventors: Victor G. Ristvedt, Mark E. Ristvedt
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Patent number: 5022889Abstract: A coin sorter in which a sorting head is positioned over a rotating pliable disc and wherein coins are sorted by the combination of an inwardly or outwardly extending tapered edge and a series of pins generally positioned in an outwardly extending line spaced from the tapered edge. The spacing between the line of pins and tapered edge changes with radial dimension, whereby coins of different diameter are urged over the tapered edge by pins at different positions. The coins are then captured between the head and pliable disc and rotated to exit positions which are unique for each coin about the outside of the sorting head.Type: GrantFiled: October 19, 1988Date of Patent: June 11, 1991Inventors: Victor G. Ristvedt, Mark E. Ristvedt
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Patent number: 4966570Abstract: A coin sorting apparatus receives coins through an opening in a guide plate onto the resilient surface of a rotating disc. The surface of the guide plate is contoured and includes portions positioned sufficiently close to the surface of the disc to press coins traveling therebetween into the resilient surface of the disc. As the coins are circulated circumferentially between the discs, the contours in the guide plate guide the coins into a single file along a first prescribed path. Coins of at least one selected denomination are displaced to follow a second prescribed path. The coins are discharged along each prescribed path at exit locations at the periphery of the plate.Type: GrantFiled: July 30, 1987Date of Patent: October 30, 1990Inventors: Victor G. Ristvedt, Mark E. Ristvedt
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Patent number: 4731043Abstract: A coin sorter of the type wherein coins are sorted by the combination of a sorting head and rotated resilient disc in which the inner edge of the coins are radially referenced as they rotate, and coins of a discrete diameter of ejected at discrete circumferential points by a series of ramp-slot combinations in which the radially positioned ramp depresses a discrete diameter of coin into a slot. The slots are configured to direct coins caught in a slot outward.Type: GrantFiled: January 28, 1987Date of Patent: March 15, 1988Assignee: Ristvedt-Johnson, Inc.Inventors: Victor G. Ristvedt, Mark E. Ristvedt
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Patent number: 4681128Abstract: A coin sorter in which a sorting head is positioned over a rotating pliable disc and wherein coins are sorted by the combination of an outwardly extending tapered edge and a series of pins generally positioned in an outwardly extending line spaced from the tapered edge. The spacing between the line of pins and tapered edge increases with outward dimension, whereby coins of different diameter are urged over the tapered edge by different pins at different positions. The coins are then captured between the head and pliable disc and rotated to exit positions which are unique for each coin about the outside of the sorting head.Type: GrantFiled: June 23, 1986Date of Patent: July 21, 1987Inventors: Victor G. Ristvedt, Mark E. Ristvedt